#include<stdio.h>
int main()
{
  int x;
	int y;
	int z;
	x=9;
	y=10;
	z=x*x+y*y;
	printf("x=%d\n",x);
	printf("y=%d\n",y);
	printf("z=%d\n",z);
	return 0;
 } 
